Index: src/lib/lib.pro
--- src/lib/lib.pro.orig
+++ src/lib/lib.pro
@@ -40,6 +40,8 @@ macx {
 TARGET=wkhtmltox
 INSTALLS += target
 
+QMAKE_LFLAGS = -L${WRKBUILD}/qt/lib
+
 DESTDIR = ../../bin
 !windows: target.path=$$INSTALLBASE/lib
 else:     target.path=$$INSTALLBASE/bin
